holler
i-.4
I
I
S.
Water
8upply
Line
and
Operating
Pressures.
If
the
boiler
is
connected
to
heating
coils
These
boilera
can
be used
ONLY
In
a forced
exposed
to
refrigerated
air,
the
.boiler
piping
hot
water
heating
system.
The
water
supply
system
must
be
equipped
with
flow
valves
or
must
Include
a pressure
reducing
valve
other
automatic
means
to
prevent
gravity
to
establish
proper
system
operating
pree-
'
circulation
through
the
boiler
during
the
Modern,
fast
heating
hydronic
boilers
cooling
cycle.
function
best
with
a cold
fill
pressure
of
12
to
18
pol.
If
system
water
volume
and
op-
erating
temperature
can
be expected
to
create
7. ~
Circulating
Pump. .
A
circulating
pump
of
an
expanded
pressure
up
to
or
more
than
80
proper
capacity
must
be
selected
for
each
psI,
these
boilers
can
be
ordered
with
a 65
boiler
model
to
assure
adequate
water
flow
pal
pressure
relief.
Thla
will
be a aubstitute
for
each
boiler
firing
rate.
Refer
to
water
for
the
30
pal
valve.
normally
shipped
with
Information
on
page
3 for
pump
selection
and
the
boiler.
Relief
valve
relieving
pressure
install
as
shown
In fig.
1.~
should
not
exceed
the
operating
pressure
of
a
any
system
component.
The
A.
O.
Smith
Although
each
circulator
is
oiled
and
op-
.
boilers
are
rated
for
160
pal
maximum
work-
erated
by
the
manufacturer,
IT
MUST
BE
pressure.
OILED
AGAIN
BEFORE
OPERATED.
Oll
the
three
oil
cups
(2
on
the
motor,
1 on
the
Systems
with
large
water
volume
and
sys-
pump)
as
Instructed
on
the
oil
tube
supplied
tema
requiring
pressure
purging
should
be
with
the
unit,
fig.
8.
Installed
with
by-pass
piping
around
the
pressure
reducing
valve.
ha
-
4.
Vent
Valves.
It
Is
recommended
that
auto-
¬
. ,
matic,
loose
key
or :acrewdriver
type
vent
!
valves
be
Installed
at
each
convector
or
radiator
and
other
high
points
In
the
dis-
tribution
system.
If
automatic
vents
are
-*
,,
used,
pressure
at
all
times
must
be
high
enough
to
prevent
air
entry
through
these
devices.
5.
Manifold
Headers.
For
multi-loop
systems
using
one
circulator,
manifold
headers
must
_'-
be
installed
in
the
supply
and
return
lines.
;
.
For
2
or
3 circuits
using
S/4"
O.D.
copper
,
..
,
..,
tubing
and
2,
8 or 4 circuits
using
1/2"
O.D.
tubing,
the
manifold
should
be
at
least
1
1/2''
in
diameter.
The
circuits
should
be
spaced
on
the
header
at
a minimum
of
three
Inches
center
to
center.
install
a balancing
cock
in
each
return
line.
FIGuRI!
3
olLING
CIR CuL AToR
6.
Cooling
Piping.
Flow
control
valves,
manual
Thereafter,
during
the
heating-season,
lub-
or
motorized,
must
be.
Installed
to
control
>
ricate
the
three
oil
cups
at
least
once
every
water
flow
through
desired
unit,
fig.
2.
4 months.
Combination
heating-cooling
sys-
toma
should
be
lubricated
every
four
months
Water
temperature
In the
heating
syptem
must
year
around.
be
reduced
to
less
than
100
degrees
F
before
cooling
system
Is
started,
or
damage
to
the
chiller
unit
may
occur.
RETURN
EUPPLY
.
. _I.
BOILER
CHILLER
COOLiljG
CIRCUl.,ATOR
FIGuRa 2
REcDMaENDED
PIPING DIAGRAM
6
AOS
106
Roenbeck
FILED: NEW YORK COUNTY CLERK 02/20/2018 10:20 AM
INDEX NO. 190311/2015
NYSCEF DOC. NO. 337
RECEIVED NYSCEF: 02/20/2018
